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Django Echarts 基于Django快速集成Echarts代码示例

-零 人气:0

1.在线定制下载echarts

https://echarts.apache.org/zh/builder.html

2.创建一个django项目或者在已有的项目

快速静态测试

test.html文件

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>ECharts</title>
  <!-- 引入 echarts.js -->
  {% load static %}
  <script src="{% static '/js/echarts.min.js' %}"></script>
</head>
<body>
  <!-- 为ECharts准备一个具备大小（宽高）的Dom -->
  <div id="main" style="width: 600px;height:400px;"></div>
  <script type="text/javascript">
    // 基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById('main'));

    // 指定图表的配置项和数据
    var option = {
      title: {
        text: 'ECharts 入门示例'
      },
      tooltip: {},
      legend: {
        data:['销量']
      },
      xAxis: {
        data: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
      },
      yAxis: {},
      series: [{
        name: '销量',
        type: 'bar',
        data: [5, 20, 36, 10, 10, 20]
      }]
    };

    // 使用刚指定的配置项和数据显示图表。
    myChart.setOption(option);
  </script>
</body>
</html>

urls文件

from django.urls import path
from app.views import TestView
urlpatterns = [
  path('test/',TestView.as_view()),
]

Views文件

from django.shortcuts import render
from rest_framework.views import View
from rest_framework.response import Response


class TestView(View):
  def dispatch(self, request, *args, **kwargs):
    """
    请求到来之后，都要执行dispatch方法，dispatch方法根据请求方式不同触发 get/post/put等方法

    注意：APIView中的dispatch方法有好多好多的功能
    """
    return super().dispatch(request, *args, **kwargs)

  def get(self, request, *args, **kwargs):
    return render(request, "test.html")

  def post(self, request, *args, **kwargs):
    return Response('POST请求，响应内容')

  def put(self, request, *args, **kwargs):
    return Response('PUT请求，响应内容')

Views文件

访问url地址：

django获取数据库中的数据传递给echarts

test1.html

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>ECharts</title>
  <!-- 引入 echarts.js -->
  {% load static %}
  <script src="{% static '/js/echarts.min.js' %}"></script>
</head>
<body>
  <div id="main" style="width: 600px;height:400px;"></div>
  <script type="text/javascript">
  // 基于准备好的dom，初始化echarts实例
  console.log(name)
  var myChart = echarts.init(document.getElementById('main'));

  // 指定图表的配置项和数据
  var option = {
    title: {
      text: 'ECharts 入门示例'
    },
    tooltip: {},
    legend: {
      data: ['销量']
    },
    xAxis: {
      data: {{ name|safe }}
    },
    yAxis: {},
    series: [{
      name: '销量',
      type: 'bar',
      data:{{ data|safe }}
    }]
  };

  // 使用刚指定的配置项和数据显示图表。
  myChart.setOption(option);
  </script>
</body>
</html>

urls文件

from django.urls import path
from app.views import TestView1

urlpatterns = [
  path('test1/',TestView1.as_view()),
]

Views文件

from django.shortcuts import render
from rest_framework.views import View
from rest_framework.response import Response

class TestView1(View):
  def dispatch(self, request, *args, **kwargs):
    """
    请求到来之后，都要执行dispatch方法，dispatch方法根据请求方式不同触发 get/post/put等方法

    注意：APIView中的dispatch方法有好多好多的功能
    """
    return super().dispatch(request, *args, **kwargs)

  def get(self, request, *args, **kwargs):
    name = ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
    data = [56, 40, 54, 23, 12, 31]
    return render(request, "test1.html",{"name":name,"data":data})

  def post(self, request, *args, **kwargs):
    return Response('POST请求，响应内容')

  def put(self, request, *args, **kwargs):
    return Response('PUT请求，响应内容')

注意：我在views文件中直接返回数据，在html模板中使用标签渲染，如果你需要使用ORM从数据库拿数据，可以做如下操作：

wheelsList = Wheel.objects.all()
name = list(Wheel.objects.values_list('name', flat=True))
data = list(Wheel.objects.values_list('trackid', flat=True))

访问url地址：

echarts异步更新数据

test2.html文件

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <!-- 引入 jquery.js-->
  <script src="http://code.jquery.com/jquery-latest.js"></script>
  <!-- 引入 echarts.js -->
  {% load static %}
  <script src="{% static '/js/echarts.min.js' %}"></script>
</head>
<body>
  <div id="main" style="width: 600px;height:400px;"></div>
  <script type="text/javascript">
  $(function () {
    var server_info;
    var myChart = echarts.init(document.getElementById('main'));
    var option = {
      title: {
        text: 'ECharts 入门示例'
      },
      tooltip: {},
      legend: {
        data:['销量']
      },
      xAxis: {
        data: {{ name | safe }}
      },
      yAxis: {},
      series: [{
        name: '销量',
        type: 'bar',
        data: {{ data | safe }}
      }]
    };
    myChart.setOption(option, true);

    setInterval( function () {

        $.ajax({
          type: 'GET',
          url: '/test1_api/',
          dataType: 'json',
          success: function (arg) {
            server_info = eval(arg);
            option.xAxis.data = server_info.name;
            option.series[0].data = server_info.data;
          }
        });
          myChart.setOption(option, true);
        }, 2000);
     window.onresize = function () {
      myChart.resize();
    };
  });
  </script>
</body>
</html>

urls文件

from django.urls import path
from app.views import TestView,TestView1,TestView1api

urlpatterns = [
  path('test2/',TestView1.as_view()),
  path('test1_api/',TestView1api.as_view()),
]

View文件

from django.shortcuts import render
from rest_framework.views import View
from rest_framework.response import Response
from django.http import HttpResponse


class TestView1(View):
  def dispatch(self, request, *args, **kwargs):
    """
    请求到来之后，都要执行dispatch方法，dispatch方法根据请求方式不同触发 get/post/put等方法

    注意：APIView中的dispatch方法有好多好多的功能
    """
    return super().dispatch(request, *args, **kwargs)

  def get(self, request, *args, **kwargs):
    name = ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
    data = [56, 40, 54, 23, 12, 31]
    return render(request, "test2.html",{"name":name,"data":data})

  def post(self, request, *args, **kwargs):
    return Response('POST请求，响应内容')

  def put(self, request, *args, **kwargs):
    return Response('PUT请求，响应内容')


count = 1
class TestView1api(View):
  def dispatch(self, request, *args, **kwargs):
    """
    请求到来之后，都要执行dispatch方法，dispatch方法根据请求方式不同触发 get/post/put等方法

    注意：APIView中的dispatch方法有好多好多的功能
    """
    return super().dispatch(request, *args, **kwargs)

  def get(self, request, *args, **kwargs):
    global count
    name = ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
    data = [56+count, 40+count, 54+count, 23+count, 12+count, 31+count]
    count = count + 1
    print(data)
    print(count)
    ret = {'name': name, 'data': data}
    return HttpResponse(json.dumps(ret))


  def post(self, request, *args, **kwargs):
    return Response('POST请求，响应内容')

  def put(self, request, *args, **kwargs):
    return Response('PUT请求，响应内容')

echarts异步加载+异步更新

在上个示例的基础上，修改test2.html如下：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <!-- 引入 jquery.js-->
  <script src="http://code.jquery.com/jquery-latest.js"></script>
  <!-- 引入 echarts.js -->
  {% load static %}
  <script src="{% static '/js/echarts.min.js' %}"></script>
</head>
<body>
  <div id="main" style="width: 600px;height:400px;"></div>
  <script type="text/javascript">
  $(function () {
    var server_info;
    // 基于准备好的dom，初始化ECharts实例
    var myChart = echarts.init(document.getElementById('main'));
    // 指定图表的配置项和数据
    var option = {
      title: {
        text: 'ECharts 入门示例'
      },
      tooltip: {},
      legend: {
        data: ['销量']
      },
      xAxis: {
        data: []
      },
      yAxis: {},
      series: [{
        name: '销量',
        type: 'bar',
        data: []
      }]
    };
    myChart.setOption(option, true);
    // 异步加载json格式数据
    $.getJSON('http://127.0.0.1:8080/test1_api/', function (data) {
      myChart.setOption({
        xAxis: {
          data: data.name
        },
        series: [{
          // 根据名字对应到相应的系列
          data: data.data
        }]
      });
    });
    // ajax异步更新json格式数据
    setInterval( function () {
        $.ajax({
          type: 'GET',
          url: '/test1_api/',
          dataType: 'json',
          success: function (arg) {
            server_info = eval(arg);
            option.xAxis.data = server_info.name;
            option.series[0].data = server_info.data;
          }
        });
          myChart.setOption(option, true);
        }, 2000);
     window.onresize = function () {
      myChart.resize();
     };

  });
  </script>
</body>
</html>

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